• 12/16/2025
  • 12/16/2025
  • Fact Sheets
    12/16/2025
    Addressing Fact Sheet for USPS Marketing Mail Flats

    This document is for business mailers who are sending flat-size USPS Marketing Mail (such as large envelopes, catalogs, and circulars). To use the USPS Marketing Mail prices, you must send at least 200 pieces or 50 pounds of mail at a time, prepared and sorted according to Postal Service guidelines.

    Announcements
    12/15/2025
    Release Notes
    12/12/2025
    Technical Specifications
    12/12/2025